package md.frolov.bible.views;

import md.frolov.bible.Constants;
import md.frolov.bible.commands.OpenEditorCommand;
import md.frolov.bible.editors.MainEditor;
import md.frolov.bible.model.Archive;
import md.frolov.bible.model.IStructure;
import md.frolov.bible.model.IURLProvider;
import md.frolov.bible.model.Module;
import md.frolov.bible.providers.ViewContentProvider;
import md.frolov.bible.providers.ViewLabelProvider;
import md.frolov.bible.sorters.BookSorter;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.IOpenListener;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.OpenEvent;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.DrillDownAdapter;
import org.eclipse.ui.part.ViewPart;


/**
 * This sample class demonstrates how to plug-in a new
 * workbench view. The view shows data obtained from the
 * model. The sample creates a dummy model on the fly,
 * but a real implementation would connect to the model
 * available either in this or another plug-in (e.g. the workspace).
 * The view is connected to the model using a content provider.
 * <p>
 * The view uses a label provider to define how model
 * objects should be presented in the view. Each
 * view can present the same model objects using
 * different labels and icons, if needed. Alternatively,
 * a single label provider can be shared between views
 * in order to ensure that objects of the same type are
 * presented in the same way everywhere.
 * <p>
 */

public class ModulesView extends ViewPart {
	private TreeViewer viewer;
	private DrillDownAdapter drillDownAdapter;
	private Action action1;
	private Action action2;
	public static final String PLUGIN_ID = "md.frolov.bible.views.ModulesView";
	
	
	/**
	 * The constructor.
	 */
	public ModulesView() {
	}

	/**
	 * This is a callback that will allow us
	 * to create the viewer and initialize it.
	 */
	public void createPartControl(Composite parent) {
		viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
		drillDownAdapter = new DrillDownAdapter(viewer);
		viewer.setSorter(new BookSorter());
		viewer.setContentProvider(new ViewContentProvider(Archive.class,Module.class));
		viewer.setLabelProvider(new ViewLabelProvider());
		viewer.setInput(Archive.getInstance());
		viewer.expandAll();
		getSite().setSelectionProvider(viewer);
		System.out.println(viewer.getInput());
		makeActions();
		hookContextMenu();
		hookOpenListener();
		contributeToActionBars();
	}

	private void hookContextMenu() {
		MenuManager menuMgr = new MenuManager("#PopupMenu");
		menuMgr.setRemoveAllWhenShown(true);
		menuMgr.addMenuListener(new IMenuListener() {
			public void menuAboutToShow(IMenuManager manager) {
				ModulesView.this.fillContextMenu(manager);
			}
		});
		Menu menu = menuMgr.createContextMenu(viewer.getControl());
//		viewer.getControl().setMenu(menu);
		getSite().registerContextMenu(menuMgr, viewer);
	}

	private void contributeToActionBars() {
		IActionBars bars = getViewSite().getActionBars();
		fillLocalPullDown(bars.getMenuManager());
		fillLocalToolBar(bars.getToolBarManager());
	}

	private void fillLocalPullDown(IMenuManager manager) {
		manager.add(action1);
		manager.add(new Separator());
		manager.add(action2);
	}

	private void fillContextMenu(IMenuManager manager) {
		manager.add(action1);
		manager.add(action2);
		manager.add(new Separator());
		drillDownAdapter.addNavigationActions(manager);
		// Other plug-ins can contribute there actions here
		manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
	}
	
	private void fillLocalToolBar(IToolBarManager manager) {
		manager.add(action1);
		manager.add(action2);
		manager.add(new Separator());
		drillDownAdapter.addNavigationActions(manager);
	}

	private void makeActions() {
		action1 = new Action() {
			public void run() {
				System.out.println();
				System.out.println();
			}
		};
		action1.setText("Action 1");
		action1.setToolTipText("Action 1 tooltip");
		action1.setImageDescriptor(PlatformUI.getWorkbench().getSharedImages().
			getImageDescriptor(ISharedImages.IMG_OBJS_INFO_TSK));
		
		action2 = new Action() {
			public void run() {
				showMessage("Action 2 executed");
			}
		};
		action2.setText("Action 2");
		action2.setToolTipText("Action 2 tooltip");
		action2.setImageDescriptor(PlatformUI.getWorkbench().getSharedImages().
				getImageDescriptor(ISharedImages.IMG_OBJS_INFO_TSK));
	}

	private void hookOpenListener(){
		viewer.addOpenListener(new IOpenListener(){
			@Override
			public void open(OpenEvent event) {
				System.out.println("open");
				IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
				if(selection.getFirstElement() instanceof IURLProvider){
					String url = ((IURLProvider)selection.getFirstElement()).getUrl();
					getViewer().setData(Constants.NO_OPEN_EVENT_TRIGGER, null);
					OpenEditorCommand.executeStatic(url);
				}
			}
			
		});
	}
	
	private void showMessage(String message) {
		MessageDialog.openInformation(
			viewer.getControl().getShell(),
			"Modules",
			message);
	}

	/**
	 * Passing the focus request to the viewer's control.
	 */
	public void setFocus() {
		viewer.getControl().setFocus();
	}
	
	public TreeViewer getViewer(){
		return viewer;
	}
}